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Journal of Electronic Imaging

Generalized Chen transform: a fast transform for image compression
Author(s): James D. Allen
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Paper Abstract

The computational procedure introduced by Chen, Smith, and Fralick is in widespread use for computing the discrete cosine transform. It is popular because of its simplicity-it is a cascade of smaller (2x 2) orthogonal transforms. We show ways to further exploit the simplicities of such procedures and introduce a new family of transform (the generalized Chen transform or GCT). One parameterization of the GCT is essentially optimal for image compression but has a lower computational cost than other transforms.

Paper Details

Date Published: 1 October 1994
PDF: 7 pages
J. Electron. Imaging. 3(4) doi: 10.1117/12.181448
Published in: Journal of Electronic Imaging Volume 3, Issue 4
Show Author Affiliations
James D. Allen, Ricoh California Research Ctr. (United States)


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